Question: What position did Peggy Whitson hold as an ISS Expedition Commander?
Paraphrase: As an ISS Expedition Commander, what position did Peggy Whitson hold?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q235523 p:P39 ?s . ?s ps:P39 wd:Q20113740 . ?s pq:P642 ?value}